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    • 9. 发明公开
    • Battery charging and isolation system for gas engine
    • Batterielade- und Isolationssystemfüreinen Gasmotor
    • EP2117097A1
    • 2009-11-11
    • EP08253020.5
    • 2008-09-12
    • Techtronic Industries Company Limited
    • Boyles, SamuelCook, Trent A.
    • H02J7/00
    • F02N11/0862F02N1/005F02N3/02H02J7/1461
    • A control system is adapted to control an internal combustion engine, which has a battery for electric start operation and a mechanical starter for manual start operation. The control system includes a transformer configured to generate a high voltage output for providing a spark, and a power regulation circuit having an input adapted to receive the high voltage output and generate a low voltage supply. A battery charging circuit includes a switching element adapted to receive the low voltage supply and operatively couple the low voltage supply to the battery to charge the battery. The battery charging circuit includes a disconnecting circuitry diode operatively coupled to the switching element so that if a voltage level of the battery falls below a predetermined value, the disconnecting circuitry diode turns off the transistor to electrically disconnect the battery from the low voltage supply and disable the electric start operation. The mechanical starter is configured to start the engine if the battery is insufficiently charged to drive the electric motor to start the engine.
    • 控制系统适于控制具有用于电启动操作的电池的内燃机和用于手动启动操作的机械起动器。 控制系统包括被配置为产生用于提供火花的高压输出的变压器,以及具有适于接收高压输出并产生低电压电源的输入的功率调节电路。 电池充电电路包括适于接收低电压电源并且将低电压电源可操作地耦合到电池以对电池充电的开关元件。 电池充电电路包括可操作地耦合到开关元件的断开电路二极管,使得如果电池的电压水平降低到预定值以下,则断开电路二极管截止晶体管以将电池与低电压电源电断开并且禁用 电启动操作。 如果电池充电不足以驱动电动机起动发动机,机械起动器被配置为启动发动机。
    • 10. 发明申请
    • ENGINE AND ENGINE-OPERATED WORKING MACHINE
    • 发动机和发动机操作机
    • WO2013027689A1
    • 2013-02-28
    • PCT/JP2012/070946
    • 2012-08-14
    • Hitachi Koki Co., LTD.MEZAKI, AkiraISHIDA, Shigetoshi
    • MEZAKI, AkiraISHIDA, Shigetoshi
    • F02P5/15F02P11/00F02D35/00F02N3/02F02N1/00
    • F02P5/02B27B17/083F02D35/0053F02D2200/0404F02D2200/101F02D2400/04F02D2400/06F02N1/005F02N3/02F02N2250/06F02P5/1506F02P11/00Y02T10/46
    • To provide an engine-operated working machine capable of preventing an engine from stopping due to fouling on a spark plug while suppressing an increase in the speed of the engine during starting. The engine is configured such that, during the starting of the engine, when it is being detected that throttle opening has been set at a starting position, if it is detected that the engine speed has exceeded a predetermined speed slightly lower than a speed when a centrifugal clutch becomes an engaged state, a control unit retards the ignition timing from a general angle (for example, 25 degrees) to a first angle (-25 degrees) BTDC, and then advances the ignition timing to a second angle (+10 degrees) at predetermined intervals (for example, at intervals of 10 cycles), and holds the ignition timing at the second angle for a predetermined time period (for example, a time period corresponding to 1 cycle), thereby preventing the engine from stopping due to fouling on the spark plug while suppressing the engine speed at the speed when the centrifugal clutch becomes the engaged state, or less.
    • 提供一种发动机操作的作业机械,其能够防止发动机由于火花塞上的结垢而停止,同时抑制发动机起动时的速度增加。 发动机被构造成使得在发动机启动期间,当检测到节气门开度已经被设定在起始位置时,如果检测到发动机转速已经超过比当a的速度稍低的预定速度 离心离合器变为接合状态,控制单元将点火正时从一般角度(例如25度)延迟至第一角度(-25度)BTDC,然后将点火正时提前到第二角度(+ 10度) )(例如,以10个周期的间隔),并且将点火正时保持在第二角度预定时间段(例如,对应于1个循环的时间段),从而防止发动机由于 在离心式离合器变为接合状态的同时抑制发动机速度的同时,火花塞上的污垢等。